Feed-water heater and purifier



Patented June 20, I899.

No. 627,l67.

T. WILLEBRAND. FEED WATER "HEATER AND PURIFIER.

(Application filed Feb. 25, 1897.)

300 0 O Q 0 O ocoo o ww ooooooov Q E (No Model.)

Inventor.

W1tnesses C Attorney.

in ST ES TIIEODOR WILLEBRAND, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR, BYMESNE ASSIGNMENTS, TO THE FEED WVATER PURIFIER COMPANY,

OF KALAMAZOO, MICHIGAN.

FEED-WATER HEATER AND PURIFIER.

SPECIFICATION forming part of Letters Patent No. 627,167, dated June 20,1899.

Application filed February 25, 1897; Serial No. 625,016. (No model.)

To aZZ whom it may concern:

Be it known that I, Tnnonon WILLEBRAND, a citizen of the United States,residing at the city of Grand Rapids, in the county of Kent and State ofMichigan, have invented certain new and useful Improvements inFeed-Water Heaters and Purifiers, of which the following is aspecification. I

My invention relates to improvements in internal feed-water heaters andpurifiers for use in steam-boilers.

It has long been known that when water is first thoroughly heated in'aboiler isthe time when the lime and other incrusting materials aredeposited. It is necessary, however, that the water be thoroughly heatedto practically the full temperature of the water in the boiler to securea complete deposit. Numerous devices have been produced foraccomplishing this desired result whichhave been more or lesssuccessful. In all of these after the deposits have been made it hasbeen necessary to clean the parts inside the boiler. So far as is knownto me from a thorough investigation no means has ever been provided formaking the deposition of incrusting material complete before the watercomes in contact with the tubes and more or less of the deposit has beendistributed over the entire interior of the boiler, forming a scale oran objectionable impurity or deposit in the body of the boiler.

The objects of my invention are therefore, first, to provide an internalfeed-water heater and purifier for boilers which can be easily removedfrom the boiler to be cleaned, and, second, to provide an internalfeed-water heater and purifier in which the water shall be thoroughlyheated and all incrusting matter and other objectionable impuritiesdeposited and collected before the said water passes to the boilerbelow.

detailed outin the claims. The structure is f ully'illustrated in theaccompanying drawings, forming a part of this specification, in whichFigure 1 is a side elevation of a horizontal boiler containing one of myimproved internal feed-water heaters and purifiers, portions beingbroken away to show details of construction and the relative position ofparts. Fig. 2 is an enlarged detail perspective view of my improvedinternal feed-Water heater and purifier shown supported by the tubes ofthe boiler. Fig. 3 is a detailed view of a slight modification of a partthereof shown separate.

Similar letters of reference refer to similar parts throughout theseveral views.

Referring to the lettered parts of the drawings, A represents theboiler, A the boilertubes within, and A the manhole. Within the boilerand resting upon the tubes A are two bases H H,of cast-iron. On these issupported my improved-feed-water heater and purifier, which is made upof two sections B B. The section Bhas a receptable 0 toward one end. Thedelivery-pipe D extends down to near the bottom of this receptacle 0. Anoverflow-spout 0' projects out from near the top i of the same into theremaining portion 13 of the section. The remaining portion B is formedlike a pan,-With dividing partial partitions E,extending alternatelyfrom opposite ends or sides and interlapping to form a long continuouspassage, except for subpartition E therein. A spout F is at the oppositeend of the passage leading into the section B,

the partitions E and between the partitions I and side walls and serveto divide the space into distinct and separated compartments to retardthe flow of the water to allow it to be thoroughly heated and to securea precipitation of all incrusting materials and other ob jectionableimpurities Within it and prevent the washing of the same out of thepurifier. At intervals the manhole of theboiler is opened and thesesections B B are Withdrawn from the boiler, and the incrustiug materialscan be thus easily removed, as it Will be deposited in the troughs orthe compartments of the sections above described. These sections mightbe cleaned by a person entering the boiler for the purpose instead ofremoving the sections from the boiler.

The device could of course all be made of one section where the boilersare small. Where the boilers are very large, it will be necessary tomake the same of more than two sections. In that case the receptacleshould be made a separate part, as indicated in Fig. 3. It should thenproject down to the boilertubes to heat the water as rapidly aspossible. The bases H are not an absolute necessity, but serve to holdthe pu rilier-sections above the tubes, and so that the top of thepurifier is in the steam-space above the water-line. This could beaccomplished by a suitable bridging, or the same could be set on thefiues, it deep enough so thetop of the purifier would extend above thewater-line. It is only required that the top of the purifier be abovethe Water-line of the boiler, and if this be true it may be anywhere inthe boiler. In the styles of boilers where no tubes or flues are inposition to support the device any suitable bridging or support can beprovided. The receptacle and sections can be made of any suitablematerial. Sheet metal answers the purpose very well. I am aware thatWood can be used for the purpose.

It is desirable that the pipe D extend from the top of the boiler downtoward the bottom of the receptacle 0 to relieve direct backsteam-pressure on the pipe and pump. The pipe, however, could beinserted into the boiler at any convenient point and deliver into thereceptacle and still answer the purpose very well. The pipe D mightdeliver directlyinto the pan and be quite effective; but in that casegreat care would be necessary to prevent sloppin g over, and the waterof the pan would be agitated to-a considerable extent, which would ofcourse cause sediment to be washed over. I desire to say in thisconnection that the heating-pans should present acomparatively broadsurface to the action of the steam to insure quick and thorough heatingof the water.

In the operation of my improved feed-water heater and purifier water isdelivered through the pipe D into the receptacle 0, the comparativelycold water introduced descending to the bottom of the receptacle andallowing the sediment to accumulate there. When the water overflowsthrough pipe 0' into the first compartment of the heater,it being coolerthan the'water already in the same, it will descend to the bottom andcause the warmer water to overflow over the partition E into the nextcompartment, where, it being cooler than the water in that compartment,it will descend to.

the bottom and raise the warmer water and pass the warmer water to thenext compartment, and so on successively. This will effectually preventthe cold water from chilling all the water in the heater by passing themore-heated waterforward,and in this way the Water finally dischargedfrom the heater at the notch F will be as fully and thoroughly heated asthe water in the boiler, and all incrusting material and otherobjectionable impurities in the water will consequently have beenprecipitated and retained in the heater. The partitions also serve thepurpose of holding the water perfectly quiet, and hence preventagitation when the pump is in operation,which permits the very finesediment to collect and settle in the bottom of the separatedcompartments. In this connection I desire to state that my improvedfeed-water heater and purifier is perfectly effective for use inconnection with any pump delivering cold water. I prefer, however, touse the same in connection with a first-class outside feed-water heaterand purifier, because it will then only need to collect a comparativelysmall residue of the fiers all leave in .the water which passes throughthe same, and by so utilizing my improved feed-water heater and purifierin connection with the outside feed-water heater and purifier theinterval of time between the openings of the boiler to remove thesediment from my purifier is much prolonged.

In use it Will be found that much of the water will be evaporated fromthe purifier and heater before it reaches the end of the tortuouspassages or troughs and passes out at the depression F. This securescomplete precipitation of the incrusting material.

The device is also of great advantage when the Water accidentallybecomes low in the boiler, because it will allow it to enter on thepurifier and become gradually heated before it strikes the superheatedportions of the boiler. This, it will be readily understood, avoids muchof the danger of an explosion.

Having thus described my improved feed- Water heater and purifier, Idesire to state that from my above description it will be noted that itis capable of great variation in its details without departing from myinvention. Any structure presenting a series of separated compartmentslying in substantially the same horizontal plane overflowing from one tothe other supported in the position described will accomplish thepurpose. The exact construction shown, however, possesses certainadvantages over any other, and I desire to protect it specifically bypatent as well as broadly.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. In an internal feed-water heater the combination of the bases H, H,to rest upon the tubes of the boiler; the sections or trays B, 13,formed into a long continuous trough by the partial partitions E, E;subpartitions E E, extending between the partitions E, to retard thepassage of the water through the troughs; a receptacle 0, to form aconnection sediment which the outside heaters and puritherewith with adelivery-pipe from toward the top thereof and a supply-pipe D, leadingdown toward the bottom of the receptacle all coacting to heat the waterin the purifier to precipitate all incrusting materials substantially asdescribed for the purpose specified.

2. In an internal feed-water heater the combination of the sections B,13, formed into a long continuous trough by the partial partitions E, E;subpartitions E E extending between the partitions E, to retard thepassage of the water through the troughs; a receptacle C, to form aconnection therewith with a delivery-pipe from toward the top thereofand a supply-pipe D, leading down toward the bottom of the receptacleall coacting to heat the water in the purifier to precipitate allincrusting materials substantially as described for the purposespecified.

3. An internal feed-water heater consisting of a box-like casing withalternate partitions extending from opposite sides nearly across thesame to form a tortuous trough-like passage, subpartitions between thealternate partitions of lesser height to retard the passage of the waterin combination with a sup- I ply-pipe delivering the feed-water into oneend of the same to allow it to pass through the passage to becomethoroughly heated to precipitate all incrusting material as specified.

4:. An internal feed-water heater consisting of a suitable casingforming a long troughlike passage for the Water, in combination withpartitions at intervals in the passage lower than the walls thereof,means of delivering water thereto so that it may pass through fierconsisting of a series of compartments arranged in substantially thesame horizontal plane and adapted to deliver from one to the othersuccessively by the force of gravity; means for supporting the same inthe steamspace of a boiler; a supply-passage leading thereto, allcoactin g together so that the feedwater shall pass slowly through thesame to become thoroughly heated to precipitate incrustating materialfor the purpose specified.

6. An internal feed-water heater and purifier consisting of a suitablecasing open at the top divided into a series of separated compartmentsby suitable partitions, adapted to deliver from one to the othersuccessively, by overflowing so that the water passes only by the forceof gravity; suitable means of supporting the same in the steam-space;and

a supply-passage leading thereto, all coact THEODOR WILLEBRAND. [1,. s]

Witnesses:

L. P. EDDY, SELIG STERN.

